Originally Posted by
Avatre
I'm pretty sure it's because of what Canadane said. You could literally unlock blue, get boosted levels by your friends, and queue up with ONLY the starting spell. It's definitely the way it was implemented, where you have to fight monsters in the wild to get their spells. That is understandable for the majority of the spells, but they could have also done it so that there are core spells that you learn doing job quests, same style as any other job, and then the really powerful spells you have to learn in the wild/dungeons/trials/raids.